Catheter having exchangeable balloon

• US 6,569,180 B1
• Filed: 06/02/2000
• Issued: 05/27/2003
• Est. Priority Date: 06/02/2000
• Status: Expired due to Fees

• Current Assignee: Avantec Vascular Corporation
• Original Assignee: Avantec Vascular Corporation
• Inventors: Yan, John, Sirhan, Motasim, Gertner, Kevin
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US09/585,943
• Time in Patent Office: 1,089 Days
• Field of Search: 606/194, 606/195, 606/192, 606/193, 606/196, 604/101.04, 604/101.05, 604/103, 623/1.11
• US Class Current: 606/194
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/1004 Balloons with folds, e.g. folded or multifolded
• CPC Class Codes: A61M 2025/1015 having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

An intravascular balloon catheter comprises a tubular catheter body having a balloon structure removably mounted over the catheter body. The catheter body has a guidewire lumen , and the catheter body may be left in place within a patient'"'"'s vasculature while the balloon structure is withdrawn and optionally a second balloon structure introduced over the catheter body. The catheter and methods of the present invention are particularly suitable for performing angioplasty and subsequent procedures, such as stent placement, which are best performed using successive interventional balloon structures.

Claims

1. An intravascular balloon catheter comprising:

a tubular catheter body having a proximal end, a distal end, and a guidewire lumen therebetween; and

a first balloon structure having a passage which is slidably receivable over the proximal end of the tubular catheter body, wherein the tubular catheter body has an inflation lumen which mates with an inflation port on the balloon structure when the balloon structure is disposed near the distal end of the tubular catheter body.

2. An intravascular balloon catheter as in claim 1, wherein the balloon structure comprises an inflation tube extending proximally from the balloon when the balloon is disposed n ear the distal end of the tubular catheter body.

3. An intravascular balloon catheter as in claim 2, wherein the inflation tube has sufficient column strength to advance the balloon structure over the tubular catheter body.

4. An intravascular balloon catheter as in claim 1, wherein the balloon structure comprises a deployment shaft extending proximally from the balloon structure when the balloon structure is disposed near the distal end of the tubular catheter body.

5. An intravascular balloon catheter as in claim 1, wherein the tubular catheter body is substantially free from structure at the proximal end which would interfere with passage of the balloon structure over the proximal end of the tubular catheter body.

6. An intravascular balloon catheter as in claim 1, further comprising an expandable vascular prosthesis disposed over the first balloon structure.

7. An intravascular balloon catheter system comprising a balloon catheter as in claim 1, further comprising a second balloon structure having a passage which is slidably receivable over the tubular catheter body.

8. An intravascular balloon catheter system as in claim 7, further comprising an expandable vascular prosthesis disposed over the second balloon structure.

9. An intravascular balloon catheter as in claim 1, wherein the tubular catheter body is axially slit over at least a portion of the length of the guidewire lumen.

10. An intravascular balloon catheter as in claim 9, wherein the axial slit removably receives the guidewire.

11. An intravascular balloon catheter as in claim 1, wherein the tubular catheter body has a length in the range from 100 cm to 200 cm, an outer diameter in the range from 1 F to 10 F, and a guidewire lumen diameter in the range from 0.3 mm to 2 mm.

12. An intravascular balloon catheter as in claim 11, wherein the balloon structure further comprises an inner sleeve having an inflatable balloon disposed over an outer surface of the inner sleeve, wherein a passage is formed axially in the inner sleeve to removably receive the tubular catheter body.

13. An intravascular balloon catheter as in claim 12, wherein the inner sleeve has a length in the range form 3 cm to 50 cm and the inflatable balloon has a length in the range from 1 cm to 5 cm.

14. An intravascular balloon catheter as in claim 1, further comprising a hub which is removably attachable to the proximal end of the tubular catheter body.